Cylinder Boring

Cylinder Blocks for boring are set up on a vertical boring machine . Each cylinder is checked with a cylinder bore gauge and on completion is transferred to a honing machine for finished sizing. We can also bore for, and fit liners.

How Cylinders Wear
A piston has two sides, a thrust side and a relief side. During a four-stroke engine’s operation, pistons get pushed down on the stroke cycle. This puts force on the front of the cylinder wall, which is the thrust side. Over time, this creates an oblong, or “out-of-round” shape in the cylinder. To rebuild an engine to factory specs, the cylinder gets bored out, until it’s perfectly round again, to the next oversize piston size.


If need help, advice or this service please give us a call today on 01204 362777

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